SOLUTION: I have problem 4^-2 +8-6^2(2+1). I got answer of -6.25. Book has -99.9375. What did I do wrong. I thought you had to make exponent positive before you could solve it. Tks
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Exponents-negative-and-fractional
-> SOLUTION: I have problem 4^-2 +8-6^2(2+1). I got answer of -6.25. Book has -99.9375. What did I do wrong. I thought you had to make exponent positive before you could solve it. Tks
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Question 711645: I have problem 4^-2 +8-6^2(2+1). I got answer of -6.25. Book has -99.9375. What did I do wrong. I thought you had to make exponent positive before you could solve it. Tks Found 2 solutions by god2012, nerdybill:Answer by god2012(113) (Show Source):
You can put this solution on YOUR website! Apply the "order of operations" -- (PEMDAS)
4^-2 +8-6^2(2+1)
parentheses first:
4^-2 +8-6^2(3)
exponents next:
1/4^2 +8-6^2(3)
1/16 +8-36(3)
multiplication/division (left to right):
.0625 +8-108
addition/subtraction (left to right):
8.0625-108
-99.9375